Car-underframe.



No. 893,948. I PATENTED JULY 21, 1908,

V. M. SUMMA & J. T. ST. CLAIR.

GAR UNDERFRAME.

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aw w PATENTED JULY 21, 1908.

8 P100 00 e m Am RP m R Bu D NH Um R A m G A v. M. SUMMA & J. T. ST.CLAIR.

UNITED STATES PATENT OFFICE.

VICTOR M. SUMMA AND JAMES T. "ST; CLAIR, OF ST. LOUIS, MISSOURI,ASSIGNORS TO AMERICAN CAR & FOUNDRY COMPANY, OF ST. LOUIS, MISSOURI ACORPORATION or NEW JERSEY.

CAR-UNDERFRAME Specification of Letters Patent.

Patented July 21, 1908.

Application filed February 3, 1908. Serial No. 414,007.

To all whom it mayconcern:

' Be it known that we, VICTOR M. SUMMA and JAMES T. ST. CLAIR, bothcitizens of the g United States, residing at St. Louis, Missouri, 5 haveinvented a certain newand-useful Imrovement in Car-Underframes, of whichthe ollowing is a full, clear, and exact description, such aswill'enable others skilled in the art to which it appertains to make anduse 10 the same, reference being had to the accom- I 1panying drawings,forming part of this specication, in which Figure 1 is atop 1 plan View,partly inv sec-- tion, of a car unde rame constructed in accordance withour invention; Fig. 2 is a longitudinal sectional view of theunderframe, showing the center sill in side elevation; and Fig. 3 is across sectional view of the underframe, the righthand; half of said ,20figure being'taken adjacent the bolster and having a center sillconstructed in accordance I-.'W1th our mvention but it 'will, of course,be understood that our improved sill could begus'ed as the side sill ofan under-frame instead of as a center sill.

Referring to the drawings which illustrate the preferred form of ourinvention, 1 designates the com ressionmember of our improved sill wh1chreferably consists of a channel that exten' s from bolster to bolster 40of the underframe, said channel being arranged with its side flanges orlegs projecting downwardly, as shown in Fig; 3. The tension member ofthe sill also consists of a channel iron 2 arranged with its side legsor'flanges projecting downwardly an'd'extending from olster to bolster,said tension member lying in the same vertical plane as the com ressionmember. Struts are interposed etween said compression and tensionmembers to produce a long deep fgirder, said struts consisting of anumber 0 pairs of vertically disposed members 3, preferably angles, thatare arranged outside of the side flanges of the.

tension and compression members 1. and 2 with one leg or flangeprojecting laterally therefrom.

Pairs of oppositely incline-d diagonal struts 4 are arranged between thevertical stints 3 and are connected at their opposite ends to gussetplates 1 and 2* secured to the side flanges or legs of the compressionand tension members 1 and 2, respectively, the lower ends of thevertical struts 3 also being connected to the gusset lates 2 on thetension" member. Some of t e vertical struts 3 are. connected at theirup er ends to separate gusset plates-1 secure to the side flan es of thecompression member, as shown in ig. 2, and the other vertical struts areconnected at their upper ends to straps 1 which pass over thecompression member 1 of the center sill, as shown in Fig. 3.- Theinclined struts 4 can either be formed from commercially herein showncom rising both angles and flat bars. Preferah are secured to the websof the compression and tension members throughout a ortion of theirlength to strengthen same. longitudinal sill of this construction isstrong and light and can be manufactured at a low cost so that itforms avery efficient center sill.

for the unde'rframe of s -car.

The bolsters of thennderframe each consists of a pair of parallelchannels Glarranged with theirhorizontal legs projectingin 'oppositedirections and extending from side sill. to side sill of the underframe,the side sills 7 also consisting of channels arranged with theirhorizontal legs projecting outwardly, as showninFigf3.

Hexagonal to and bottomrover plates'S are secured to t e horizontal flanes of the being connected together at the ends of the sill by web plates9. The outer end of each ly,- reinforcing plates 5 rolled, anglesor-flat bars, the construction bolster channels '6 and the ends of t etrussed.

etween the horizontal legs on tension and compression members 1 and 2 ofthe web plates 9 is provided with an inte--- gral flange 9, as shown inFig. 1, that is secured to the web of the adjacent bolster chan- 1 neland the connection between the. center sill and bolster isfurtherstrengthened by means of angle-shaped members 10 connected to the web ofthe bolster channel and to the inside faces of the web plates 9, asshown in Fig. 1 and also by means of short pieces 11 of angle ironsecured tothe outside faces of .the web plates 9 and to. the bottomcover plate'8 of the bolster, as' shown in Fig. 2.

The draft sills 12 consist of channels that are connected to thechannel-shaped end sill 13 and to the bolster, and diagonal braces 14are arranged between the bolster and end sill, as shown in Fig. 1 Thecross-bearers of the underframe consist of deep channels 15 andcomparatively shallow channels 16 connected at their opposite ends tothe side' sills and also secured to the laterallyprojecting fiielnges ofthe vertical struts 3 of the center S Having thus described ourinvention, what we claim as new and desire .to secure by Letters'Patentis:

1. A longitudinal sill for a car underf rame, consisting 'ofchannel-shaped tension and compression members havmg their webs arrangedhorizontall and struts interposed between saidmem ers; substantially asdescribed.

' and connected thereto; substantially as described.

3. A longitudinal sill for a car underframe, consisting ofchannel-shaped tension and compression members arranged with their sidelegs or flanges projecting downwardly, and struts interposed betweensaid members and connected thereto; substantially as described.

4. A longitudinal sill for a car underframe, comprising channel-shapedtension and compression members having their webs ar rangedhorizontally, vertically disposed struts interposed between saidmembers, and oppositely inclined di-agonalstruts arranged betweeen thevertically disposed struts and secured to said members; substantially asdescribed.

5. A longitudinal sill for a car underframe, consisting ofchannel-shaped tension and compression members, and pairs of strutsconnected to the side flanges of said members; substantially asdescribed.

6. A longitudinal sill for a car underframe, comprising channel-shapedtension and compression members having their webs arranged horizontally,pairs of vertically disposed struts connected to the side flanges ofsaid members, and oppositely inclined diagonal struts connected to theside flanges of said members and arranged between the vertical struts;substantiall as described.

7. A longitudinal sill-tor a car underframe, comprising channel-shapedcompression and tension members having their webs arconsisting rangedhorizontally, gusset plates secured to the side flanges of said members,and pairs of struts connected to said gusset plates; substantially asdescribed.

8. A longitudinal sill for a car underframe,

' comprising channel-shaped tension and compression members having theirwebs ar-r' ranged horizontally, vertically disposed stru-t's havingtheir upper ends secured to the com.- pressionmember, gusset latesconnected to the tension member an tension member; substantially asdescribed.

9. A longitudinal sill for acar underframe, of channel-shaped tensionand compression members having their side flangesprojecting downwardly,struts inter-' posed between said members, and straps passing over, theweb of the compression member and having the upper ends of some of saidstruts secured thereto; substantially as described.

10. A longitudinal sill for a car underframe, comprising channel-shapedtension and com ression members having their Webs arranged horizontally,struts connected to the side flanges of said members, and reinforcingplates secured to the webs of said members to strengthen same;substantially as described. 7

11. A longitudinal sill for a car underframe, comprising channel-shapedtension and compression members having their webs arranged horizontally,web lates secured to the side flanges of said mem ers adjacent the endsof same, and pairs of vertically disposed struts and oppositelyinclineddiagonal struts connected to the side flanges of'said members betweentheir opposite ends; substantially as described.

12. A car underframe comprising bolsters,

a trussed center sill arranged between said bolsters and consisting of atension member and a compression member of channel-shape in crosssection and having their webs arranged horizontally, struts interposedbetween said members, and web plates secured to the side flanges of saidmembeisadjacent their 0 posite ends and also being connected to t ebolsters; substantially as described.

13. A car underl'rame comprising a bolster, a trussed center sillcomprising tensionand compression members and struts interposed betweensame, web plates secured to the tension'and compression members adjacent the end of the sill, and integral flanges on said web plates thatare connected to the bolster substantially as described.

14. A car underframe comprising a bolster which consists of parallelchannels: and

top and bottom cover plates secured to the having the lower; ends ofsaid struts secured thereto, and op positely inclined diagonal strut-sarranged'between the vertical struts arid connected at horizontal legsthereof, a trussed center sill consisting'oi compression and tensionmembers and interposed struts, web plates secured to one end of saidsill and provided with inte al flanges that are connected to the web oione channel of the bolster, anglesha ed members. secured to said channelan to said web plate, and means for securing said web plates to thebottom cover late of the bolster; substantially as described 15. A carunderframe, comprising bolsters, end sills, draft sills interposedbetween the bolsters and end sills, a' trussed center sill consisting ofohannelshaped tension and com ression members terminating inside of theholsters and having their Webs arranged horizontally, struts interposedbetween said members, and means for connecting the end portions of saidmembers to the bolsters; sub

stantially as described.

16. A car underframe comprising side sills, a trussed center sillprovided with vertically disposed struts having laterally projectingflanges, and continuous cross-bearers arranged in approximately the samehoristantiallyas described.

zontal plane as the side sills and connected at their op osite ends tothe side sills, said cross bearers eing secured to the flanges on saidstruts; substantially as described.

- 17. A car underframe, com rising bolsters, side sills, a trussedcenter sill aving its opposite ends connected to the bolsters and con-In testimony whereof, We hereunto flfilX our signatures in the resenceof two witnesses, this first day of ebruary, 1908.

VICTOR M. SUMMA.

. JAMES T. ST. CLAIR.

Witnesses:

WELLs L. CHURCH, GEORGE BAKEWELL.

